Road maintainer



July 15, 192.; asoman W. T. BEATTY ET AL ROAD MAINTAINER Filed Jan. 2. 1923 5 Sheets-Sheet 1 SH V July 15, 1924..

W. T. lBEAT'Yv ETA AL ROAD MAINTAINER Filed Jan. 2, 1925 july 15, 1924;

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W. T. BEATTY ET AL ROAD MAINTAINER Filed Jan. 2, 1923 5 Sheets-Sheet 5 Patented July 15d, 1924.

. UNITED- STATES WILLIAM T. BEATTY, OF FLOSSMOOR, FRANK S. DAVIS, OF HOMEWOOD', AND FREUD.-

PATENT-lorries.

WILSON, F HARVEY, ILLINOIS;y SAID D AVIS AND WILSON ASSIGNORS T0. AUSTIN MANUFACTURING C0., 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

Roan MAINTAINER.

j Applicationniea January a, 1923. serial'no. 610,346-,

' To all whom t may concern.' A

Be it known that we, .WI'LLIAMT BEATTY, FRANK S. DAVIS, and FRED D. WiLsoN, citizens lof the United States, residing, respec- 6 tively, at .Flossmoor, Homewood, and Har- Vey, in the county .of Cook* and State of Illinois, have .invented a certain new and useful Improvement in Road Maintainers, of whichthe following is a specification. This invention relates to devices for maintaining di'rt roads in good condition.

The object of the invention is to provide mechanism applicable to commercial road roller-scarifying machines and,lparticularly, one supported and controlled by the con# ventional scarifier operating mechanism itself, whereby the original machine may be used to manipulate a conventional planer or maintainer extending across and operating upon a road traversed by the machine.

The invention consists in mechanism capable of attaining the foregoing and other objects which can be easily and comparatively cheaply made, which is highly satisfactory and efficient in use,'and which is not readily liable to get out'of order and in many special features and details of construction hereafter more fully vset forth in. the speciication and claims.

Referring to the vdrawings in which like a numerals designate the same parts throughcut the several views:

Figure 1 is a side elevation of a eonven-l tional form of road roller-scariiier, having the mechanism of this .invention in its prefer-red form applied thereto.

Figure 2 is a face view of the scarilier or maintainer blade showing means for adjust ably positioning it on the frame which car- -ries it.

' Figure 3 is a perspective view of the maintainer mechanism propershowing the manner in which it works upon the road and the results obtained. i

Figure 4 is a sectional detail view 'on the line 4-4 of Figure 2.

i 'Figure 5 is a sectional line 5- 5 of Figure '7.

' Figure 6 isa side elevation of the mecha- Ynism of this invention taken from the right hand side of Figure `7 Figure 7 is a rear elevation of the device of Figures 1 and 6.

daan View on the in advance of Figure 8 is a detail view on the irregular l1ne8-8 of Figure 6. A

Figure. 9 is a plan view on the irregular hne-99 of Figure 6.

Figure 10 is a plan tainer mechanism of Figure 3, taken on'the l1ne-l0-l0 of Figure 6.

Figure 11 'is a sectional detail view on the .-line 11-11 of Figure 10.

Figure 12 is a side elevation of the plow or spreader taken on Figure l0. y

The device of this invention is shown applied to a conventional form of road roller, having a body 16, rear rollers 18, front roller 20, a steering control wheel 22, said roller mechanism being alsoequipped with a thoroughly conventional form of scarifier` mechanism including a rearwardly and downwardly disposed power cylinder 24, controlling a piston-rod 26, supporting a yole-28 connected to the scariier tool frame, including a plurality of parallel arms 30, united together bya shaft 32, each arm being provided at its outer end with a scarilier tool 34 adapted, when the scariierisnormally operating, to dig into, the` street in an ordinary manner. The frame is also pro- .vided with aligned shafts 36 which in the normal scarifying mechanism carry depth determining wheels of conventional form, the

-same being removed for the application of the device of this invention.

The'planer blade 38 is provided with a cutting. edge 40 of any desired contour, to which the surface of the -road is to be cut. In' the particular case hereillustrated, it is jsuiiicikently curved to provide what is known as a crown road, higher in the center than at the sides. The blade may also becurved slightly rearwardly in its center, as shown in Figure 10, so that as the blade lies across the road and is pushed forward, its ends or the line 12-12 of 'view of the main- 'A wings cutk portions of road surface slightly A those cut by the center of the blade.

The blade is detachably secured ony the base member 42 of a U-shap'ed frame, Ahaving laterally extending separated, parallel runners or shoes 44, provided with upwardly extending material retaining flanges 46, operating as hereafter described, Bolts 48, selectively insertable through diEerent combinations of holes 50--52 in the blade and 54, 55 and 56 in member 42, make possible almost any desired adjustment of the blade vertically or horizontally with reference to member 42.

Inside the U-shaped frame 42-46 and behind the blade 38 is preferably placed an angular plow or spreader member 58, having its point, if desired, connected to crossmember 42 by a chain or the like 60. This plow member is preferably, butnot necessarily, made up of a plurality of separate, comparatively short bars 62, pivotally connected together by suitable bolts or the like 64, whereby the complete plow device readily conforms to the curvature of the crown line 66of the road (Figure 12). The outer ends of the plow member 68 are detachably secured to retaining flanges 46 of the run' ners 44 by bolts 68, selectively positionable in holes 70, differently disposed vertically of the flanges 46, thereby enabling the operator to secure a fine adjustment of the ends of the plow 58 with reference to the road surface 66, which -is to be formed in the ultimate disposal of the material planed ofl" by the blade 38.

The plow bars 62 are, as shown, preferably but not necessarily of less height than the retaining flanges 46 so that dirt cut by the plow may pass over it to the space behind it while still held between the retainers.

The maintainer frame may, if desired, be also equipped with a more or less long, Hexible chain 72, placed behind the plow 58 and secured at its opposite ends to the retainer flanges 46. In the particular case here illus' trated, this attachment is made by means of the bolts 68. The shoes 44 are preferably, but not necessarily, braced apart at a point remote from the blade 38 by any suitable means, as, for instance, the angle bar 74 Figure 10).

en the maintainer frame mechanism just described is moved'to the left from the position shown in Figures 3 and 10, the blade 38 severs earth portions 76 in front of it from the road surface. If the road being treated has ruts 78 in it, asis usually the case, parts of this severed earth will fall directly into these ruts; the balance of it will slip over the inclined blade 38 into the area 80 behind thel blade and in front of the plow 58 which spreads it sideways into piles 82, thereby, of course, filling any small depressions in the surface of the road below the line of cut. of the blade 38 and completing the filling of the ruts 78. Any surplus dirt left in these piles 82 spills over the plow 58 into the area 84 in front of the chain, rope or other similarly functioning instrument which, because of its shape, tends to carry some of the dirt at least to the center of the road and leave it at the top of the crown line 66 before it finally spills over and naonaei through the chain onto the road surface. In other words, this maintainer device severs a portion of road surface, distributes the material'first toward the sides of the road to fill up all pit-holes and ruts, then distributes the surplus back toward the center of the road, leaving it largely at the crown of the road, a result highly desirable. 1

During all of this operation, the severed earth once passed over blade 38 into the space 8() between retainers 44-46 islkept between the retainers until finally spread over the road surface.

Having provided the road roller-scarifier mechanism of conventional form and this highly desirable form of maintainer mechanism, the two are assembled in plan view, as shown in Figure 9, and operatively connected.

From suitable points on the lower portion of the road roller frame, as, for instance, on lugs 86, depending from the corner castings 88 which carry the shaft 90 of the conventional scarifier frame 30, heretofore referred to, parallel connecting rods 92 are pivoted so that their free swinging ends can be attached as at 94 to the runners 44, immediately behind blade carrying member 42. These rods 92 are thus placed nearly horizontaL-so that as the road roller moves to the left, as viewed in Figure 1, they push the maintainer frame 42-44 along the road with as little tendency as possible to embed the blade 38 in the earth.

The tendency to embed the blade, just referred to, is overcome by providing on each side of the road roller body 16 and well toward the supposedly free ends of the shoes 44, a bell crank mechanism 94-96 in which arms 94 operate through a U-shaped bolt mechanism 98, encased in springs 100, bearing on cross-member 74 to press said member and consequently the shoe ends onto the ground as the bell crank member is rocked in a counter-clockwise direction. Each bell crank arm 96 is connected through a rod 102-lever 104-link 106 with a crank-arm 108 moving in unison with shaft 90 and scarifier frame 30. The parts just enumerated are so proportioned that the gravity downward movement of the scarifier frame exerts a Severe pressure through the springs on the bar 74 and thence on the shoes 44. This pressure is, of course, augmented wlw-uever working fluid-such as compressed air-is admitted in Conventional manner to cylinder 24 to force the scarifier frame downward.

Rigidly attached to the forward or blade end of the maintainer frame, for insta nce, by means of suitable angle iron lugs 110 on the respective runners,44 are vertical posts 112. having right angle turned upper ends 116 carrying depending catch loops 118, adapted to receive and hold at selected points theron chains l2() connected to the upper ends of depending retractile springs 122 whose opposite ends are attached by any suitable means,

as for instance washer-like plates 124, on shaft 36. The normal depth gauge Wheels, heretofore referred to, of the scaritier mechanism having been removed, the places of their hubs are taken by the hubs 126 of vertical guide plates 128, adapted to reciprocate vertically on the posts 112, being neld in placeduring such reciprocation by any suitable means, as, for instance, the pin and slot connections 13G-132. The result of the construction just described is that the entire frame 42-44 is reciprocatable vertically under the control of the springs 122 but it cannot get. out of its normal position enclosing the scarifier mechanism and the end l of the road roller mechanism.

The construction described also enables the operator, by manipulating the cylinder 24, to drive the scariiier-frame downward to force the forward or blade end of the maintainer frame firmly onto the road but under the control of springs 122. It is desirable that this ability to fo-rce vthe maintainer frame onto the road surface be automatically limited at predetermined, selected variable points. This desirable result is accomplished by firmly attaching to the scariier yoke a flexible connecting member as, for instance, a chain 134, having at its upper end means for detachably fastening it atselected points in 'vertical line along the fixed support, as, for instance, the cylinder 24.l In the particular case here illustrated, what is conventionally known as a stovehook 136, insertable in selected holes 138, in a plate 140, is provided for this` purpose.

Vhenever the mechanism of this invention is not in use as while the road' roller is moving from one piece of Work to another. it is necessary that the maintainer frame mechanism be elevated clear of the road/surface, as, for instance, to the position shown in Figure 1. Before this result can be ac-y complished, it is necessary to fasten the forward or blade end of the frame to the scaritier mechanism. This is accomplished byproviding a temporary connecting device, such, for instance, asfa chain 142 faste-ned at its lower end to the blade end of the frame and adapted to be hooked at selected links on a catch device, as 144, suitably located at any convenient point, in the particular embodiment here'shown, it is illustrated as supported bytwo scarifier tines (Figure 7).

v For convenience of ready operation, without its being necessary for the operator to stoop down to make this connection, the

chain 142 is madelOngenOugh so that' its upper end engages a hook 145, conveniently positioned on the upper end of cylinder 24.

When it is desired to travel with the machine, the operator manipulates chain 142 to conveniently tightly fasten -the frame 42-44 to the hook supports 144; then manipulates the scariier cylinder 24 to elevate the yoke 28 and consequently the entire scaritier mechanism. This rocks shaft 90 in a cross-wise direction with the resulting eleentirely release limit chain 134,'and then use the full force of air in cylinder 24 throughout the full stroke'of piston rod 26 to force he maintainer mechanism onto' the road surace.

This particular embodiment of the invention does not contemplate the ordinaryuse of the scariier mechanism to scarify the road surface, while the maintainervmechanism is attached thereto. Thetdevice is, however, readily re-convertible into a conventional scarifier machine by removing the washers 124 and the hubs 126 and attached parts, disconnecting the rods 94 from the lugs 86 and disconnecting the parts 94-96 and 102 atl any convenient point-by methods, the details of which it is unnecessary to here illustrate.

This will allow the maintainer mechanism to lie on the ground so that the road roller can move to the right as viewed in Figure 1,'ientirely clear of it.l As soon as this is done, the normal depth wheels of the scariiier are replaced on shaft 36 and the roadroller-scarifier is restored to tion and ready for work.

Should the user, however, desire to use the machine as a scaritier it can be done by either total/ly removing the blade 38 or adjusting it high enough so that its blade does not cut the road. Under these conditions, the maintainer4 frame and particularly the runners 44 simply performthe functions of the regular depth wheels of the4 normal scarifier machine. Under these conditions, the operator locks members 112 and 128 together and releases chain 134 as heretofore described. y

The chain 134 and its adjusting features is importantin that it enablesthe .operator lto by properly selecting a hole 138 limit che downward movement under air pressure of the scariier mechanism to a particular'.4

The ability to adjust the ltensions of the respective springs l122 by lutilizing the 118-120 mechanism is important in that it normal condican be 'used for other enables the operator to make the device place a greater pressure on one end of the blade 38 than the other, should road conditions warrant any such action.

The use of the springs 122 and 100 is important in allowing the maintainer device to travel over inequalities of the road which would otherwise cause damage to the machine.

Having thus described our invention, what we` claim as new and desire to secure by Letters Patent is:

" i' 1. In mechanism of the class described, a

rigid maintainer blade adapted to extend crossways of a road, separated material retainers extending rearwardly from the blade and a flexible angular plow, with its point' secured to the blade, and its sides connected to the retainers.

2. In mechanism of the class described, a maintainer blade, adapted to'extend crossways of a road, separated material retainers extending rearwardly from the blade, and a flexible angular plow, with its point toward the blade pulled by the blade, conformable to the transverse curvature of a road passed over, connecting the retainers.

3. In mechanism of the class described,

a maintainer blade, adapted to extend crossways of a-road, separated material retainers extending rearwardly from the blade, and a flexible angular plow, with its point toward the blade pulled by the blade, made of a plurality of connected bars, conformable to the transverse curvature of a road passed over, connecting the retainers.

4. In mechanism of the class described, a maintainer blade adapted to extend crossways of a road, separated parallel material retainers extending from the blade, an angular plow behind the blade, with its point toward-the blade, connecting the retainers, and a flexible road surface engaging member across the space behind the plow.

5. In mechanism of the class described, a maintainer blade, adapted to extend cross ways of a road, separated material retainers extending from the blade, a flexible angular plow, with its point toward the blade, conformable to the transverse curvature of a road passed over, connecting the retainers, and a flexible road surface engaging member across the space behind the plow.

6. In mechanism of the class described, a maintainer blade, adapted to extend crossways of a road, separated material retainers extending from the blade, a flexible angular plow, with its point toward the blade, made of a plurality of connected bars, conformable to the transverse curvature of a road passed over, connecting the retainers, and a exible road surface engaging Imember across the space behind the plow.

7. A U-shaped maintainer frame adapted to be propelled over the ground, having in combination a flexible plow (58) and chain (72) connecting the arms of the U-member as shown and described.

8. In mechanism of the class described, a maintainer blade adapted to extend crossways of a road, separated parallel material retainers extending from the blade, and a flexible road surface engaging member across the space between the retainers behind the blade.

9. In mechanism of the class described,

a maintainer blade adapted to extend crossways of a road, separated material retainers extending from the blade, a flexible road surface engaging member across the space between the retainers behind the blade, and means for vertically adjusting the points of attachment of the road surface engaging member on the retainers.

10. In combination with a machine travel ing over a road surface, a pair of longitudinally extending separated earth retainers, a cutting blade across the retainers adapted to deliver earth severed from the road surface in between the retainers and means carried by the retainers behind the maintainer for distributinglthe earth over the road surface.

11. In mechanism of the class described, a maintainer blade adapted to extend cross.- ways of a road, separated material retainers extending from the blade, an angular plow with its point toward theblade, connecting the retainers, and means for vertically positioning the height of the plow at the retainers.

12. In mechanism of the class described, a maintainer blade adapted to extend crossways of a road, separated material'retainers extending from the blade, an angular plow, with its point toward the blade, connecting the retainers, a flexible road surface engaging member across the spacefbetween the retainers behind the blade, and means for vertically positioning the height of the last mentioned member at the retainers.

13. In combination, a road scarilier and a road maintainer forced onto the. ground by the scarifier mechanism.

14e. In combination, a road scarier and a road maintainer forced onto the ground, at atl least foui points, the scarifier mechanism.

15. In mechanism of the class described. in combination, a road machine equipped with a scaritier mechanism and a road planer carried by the scarifier mechanism.

16. In mechanism of the class described, in combination, a road machine equipped with a scariiier mechanism and a. road planer elevatable and depressible by the scarifler mechanism.

17 In mechanism of the. class described, in combination, a road machine equipped with a scarifier mechanism, a road planer carried by the scariller mechanism, and

l Vrod connection between the road machine mechanism, and cushion means in the elemeans selectively limiting the depth of movement of the scariier to thereby control the planer. L

18. In mechanism of the class described, in combination, a road machine equipped with a scariier mechanism, a road planer elevatable and depressible by the scarifier mechanism, and meansl selectively limiting the depth of movement of the searier to thereby control the planer.

19. In mechanism of the class described, in combination, a road machine equipped with a scarifier mechanism, a road planer carried by the scarifiermechanism, means selectively limiting the depth of movement of the scarifier to thereby control the planer, and a chain of fixed length having o ne end selectively attachable between different fixed point i 20. In mechanism of the class described, in combination, a road machine equipped with a scariiier mechanism, a road planer elevatable and depressible by the scariier mechanism, means selectively limiting the depth of movement of the scarifier to thereby control the` planer, and a chain of fixed length having one end selectively attach able between different fixed points.

21. In mechanism of the class described, in combination, a road machine equipped with a scariiier mechanism, a road planer elevatable anddepressible by the scarifier vating and depressing means.

means between the scariiier and maintainer- 22. vIn combination, a road scariier and a road maintainer forced ontow the ground by the scarifier mechanism, and cushion mechanism.

23. In combination, a road scarifier and a road maintainer forced onto the ground, at at least `four points, by the scarier mechanism, and cushion means between the scariiier and maintainer mechanism.

24. In combination, a road scariier and a road maintainer forced onto the ground by the scarifier mechanism, and means selectively limiting the point to which the scariiier can force the maintainer.

25. In combination, a road scariiier and a road maintainer forced onto the ground, at at least four points, by the scarifier mechanism, and means selectively limiting the point to which the scarifier can force the maintainer.

26. In mechanism of the class described, in combination with a road machine. and a vertically reciprocatable scarier mechanism attached thereto, a maintainer frame enclosing the scarier mechanism, a push and the frame, means whereby the weight of the scarifier mechanism acts directly' at a point in the frame below the scarifier to force the frame downward and a. lever mechanism also connecting thescarifier mechanism with a remote point on the frame to also force the frame downward at that point.

27. In mechanism of .the class described,

incombination with a road machine and a vertically reciprocatablel scarifier mechanism attached thereto, a maintainer frame enclosing the scariiier mechanism, a push rod connection between the road machine and the frame, means whereby the weight of the scarifier mechanism acts directly at a point in the frame below the scarifier to force the frame downward, and a lever va post on the maintainer lframe held in sliding engagement with the guide, and a spring lconnection between the post and maintainer frame, resisting pressure by the forcing' means..

29. In mechanism of the class described, a

movable vehicle, a scarifier frame pivoted to p the vehicle to swing up and down, means forcing the frame downward, a vertically disposed guide pivoted on the frame, a maintainer frame 'below the/scarifier frame, a post on the maintainer frame held in sliding engagement with the guide, aspring connection between the post and maintainer frame, resisting pressure by the forcing means, and means regulating said spring.

30. In mechanism of the class described, a movable vehicle, a scariier frame pivoted to the vehicle to swing up and down, means forcingthe frame downward, a vertically disposed guide pivoted on the franie, a maintainer frame below the scarilier frame, a post on the maintainer frame held in sliding engagement with the guide, a spring lik) wconnection between the post and maintainer' whereby elevating the scarier lifts the en-V tire maintainer frame off the ground. 32. A road roller with an elevatable scarifier mechanism, a maintainer frame dis- .posed about the scarilier and connecting dewise of a road, separated material retainers extending in engagement with the ground rearwardly from the blade and an angular plow with its point behind the maintainer and with its sides connected to the retainers.

34. In mechanism of the class described, a maintainer blade adapted to extend crosswise of a road, separated material retainers extending in engagement with the ground rearwardly from the blade, and an angular plow of substantially less height than the retainers with its point behind the maintainer and with its sides connected to the retainers.

35. In mechanism of the class described,

a maintainer blade adapted .to extend crosswise of a road, separated material retainers extending in engagement with the ground rearwardly from the blade and a flexible angular plow with its point behind the maintainer and with its sides connected to the retainers.

36. In mechanism of the class described, a maintainer blade adapted to extend crosswise of a road, separated material retainers 'extending in engagement with .the ground rearwardly from the blade and a flexible angular plow of substantially less height than the retainers with its point behind the maintainer and with its sides connected to the retainers.

In witness whereof, we have hereunto subscribed our names.

WILLIAM T. BEATTY. FRANK S. DAVIS. FRED D. WILSON. 

